| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 18 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Horn not working |1.7.3a| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Front Brake disc contaminated wash of old oil from brake disc. advise checking pads (1.1.14 (b)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Offside Front Steering lock stop ineffective |2.1.3| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Fuel pipe insecure gon hard (6.1.3 (a) (i)) | 1 |
| Rear Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Throttle operating incorrectly cannot be applied smoothly |6.2.1f| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Brake disc contaminated (1.1.14 (b)) | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Brake pedal mounting insecure |3.1.2a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Direction indicator not working |1.5.1c| | 1 |